Do we KNOW that the AvMap is going to be all-in-one?

Most likely not, since XM weather is an add-on feature to the Avmap.
I'm certain that an external receiver/antenna is required just like
the XM addon to anywhere map.

Presuming that AvMap combines the external receiver & antenna into one unit,
this seems to differ little from the 496's hockey-puck antenna.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"